A study of armature winding internal faults for turbogenerators

Author

Wang, Xiangheng ; Chen, Songlin ; Wang, Weijian ; Sun, Yuguang ; Xu, Longya

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

38

Issue

3

fYear

2002

Firstpage

625

Lastpage

631

Abstract

The internal fault of armature windings is one of the most severe faults for turbogenerators. It is necessary to know the transient currents of the machine when the internal faults occur so as to design suitable protection. Based on the multiloop method, a mathematical model of a turbogenerator with internal faults is developed. The air-gap permeance analysis is used to calculate the parameters and eddy current of the solid rotor. The method is verified by computer simulation and experimental results. The developed model accurately predicts transient currents and provides theoretically insightful information for protecting turbogenerators with internal armature faults

Keywords

air gaps; eddy currents; electrical faults; machine protection; machine theory; rotors; transients; turbogenerators; 24 kW; 30 kVA; 400 V; 43.3 A; 50 Hz; air-gap permeance analysis; armature winding internal faults; computer simulation; eddy current; mathematical model; multiloop method; solid rotor; transient currents; turbogenerators; Air gaps; Circuit faults; Electric machines; Mathematical model; Power generation; Power system harmonics; Protection; Solids; Sun; Turbogenerators;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2002.1003410

Filename

1003410